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Kay [80]
3 years ago
13

Energy is expended when a force moves matter across a distance.

Chemistry
1 answer:
WARRIOR [948]3 years ago
7 0
1. This is true. Specifically, this energy is in the form of work. This is because  we know that the formula of work is force times distance. 

2. This is true. Basically, the first law of thermodynamics is the conservation of mass, and consequently, energy. It states that the total energy of an isolated system is constant.

3. This is false. They are not synonymous because temperature is measured in terms of either °C, °F or K. Thermal energy is measured in either joules, calories, or British thermal units. They are related, but not synonymous.

4. This is true. The Kelvin scale is called the absolute temperature scale, because all temperature values are positive. This is don by finding the minimum temperature which is 0 K or equivalent to -273°C. In fact, this temperature is only ideal, and impossible to achieve.

5. This is false. Calorie is a unit of energy. But the transfer of amount of energy to raise the temperature by 1°C of 1 g of water is called the specific heat capacity of water.
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10.0 ml of 1.00 M HCl neutralized 20.0 ml of a NaOH solution. What was the molarity of the NaOH?
Viefleur [7K]

Answer:

0.500 M

Explanation:

The balanced equation for the neutralization reaction is as follows

NaOH + HCl —> NaCl + H2O

Molar ratio of NaOH to HCl is 1:1

Number of moles of NaOH reacted is equal to the number of HCl moles

We can use the following equation

c1v1 = c2v2

Where c1 is concentration and v1 is volume of HCl

c2 is concentration and v2 is volume of NaOH

Substituting the values

1.00 M x 10.0 mL = c2 x 20.0 mL

c2 = 0.500 M

Concentration of NaOH is 0.500 M

6 0
4 years ago
.asdfafERf EfgAsdf as
Bogdan [553]

Can't say i can answer this. :/

8 0
3 years ago
If the neutralized mixture was boiled dry, what would be left?
alisha [4.7K]

A salt would be left over. For example, if you reacted NaOH with HCl, your products would be NaCl, a salt, and water.

7 0
3 years ago
Why was 1,2 dichlorobenzene used as the solvent for the diels alder reaction we performed in the lab?
pav-90 [236]

Answer:

1,2 dichlorobenzene was used as the solvent for the diels alder reaction: <em>because the co elimination part of the reaction needs high temp and a high boiling point solvent such as 1,2 dichlorobenzene</em>

Explanation:

Diels-Alder Reaction is a useful synthetic tool to prepare cyclohexane rings. It is a process, which occurs in a single step that consists of a cyclic redistribution of its electrons. The two reagents are bond together through a cyclic transition state in which the two new C-C bonds are formed at the same time. For this to occur, most of the time, it is necessary a high temperature and high-pressure conditions. Since 1,2 dichlorobenzene has a boiling point of 180ºC is a good solvent for this type of reactions.

8 0
3 years ago
People tend to speak more quietly in restaurants than they do when they are having an ordinary conversation Restaurant conversat
MArishka [77]

Answer:

A loud ordinary conversation following the supplied information in the question is about 4500 dB. But, in the official decibel system measure a loud conversation does not overcome 100 dB.

Explanation:

Using the supplied data of the exercise, we say that in a restaurant conversation the value is 45 dB. If we multiply this by 100 we will have a value for a laud ordinary conversation.

45×100 = 4500 dB.

but as I mentioned in the answer, in the official decibel system measure a loud conversation between 2 man reaches a maximal of 100 dB.

6 0
4 years ago
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